in libya. how big of a role will the u.s. play now? are we still in charge? and with war fatigue setting in and criticism from both sides of the aisle, when does the president fully explain what's perhaps, monday or tuesday of next week. >>> plus, fear of spreading terrorism. there were anti-government demonstrations today and in some cases violence in many arab countries, including yemen. thousands turned out calling for the ouster of a u.s. ally. if the president is overthrown, who stops al qaeda in the arabian peninsula from taking over? >>> and there are increasing concerns of spreading radiation from the crippled power plant in japan with even more people now being encouraged to get out of the area, but not ordered. how great is that danger? >>> plus, a little politics with hispanics now making up one of our every six americans and one out of every four children, by the way, how long can republicans be seen as hostile to their interests? the huge implications of the census report on the 2012 presidential election. and finally, what's the more serious candidates to do? how does anyon

in the downfall of the soviet union. but speaking as an engineer, i'm proud to say a lot of u.s. navy personnel stepped up to the plate right after the three mile island accident and improved safety of the nuclear system in the united states. the design of that nuclear reactor at three mile island was much, much better than at chernobyl. >> we have 31 designed nuclear plants in the united states that are similar to the one over at fukushima right now, the one causing the great concern right now. do you think we have a better backup system than they do? they don't have a good one, because it was undermined by the tsunami. it affected the battery backup to the diesel system, none of it worked. they ended up putting in seawater, which is destroying their plant, as an extreme measure. how are we in that regard? in terms of nuclear diesel backup, battery backup, do we have all these backup systems? >> we do. and there are parts of the united states and california where there are two nuclear plants at diablo canyon and san aknow frey where concerns have been raised about size eismic activity. in

as a nuclear engineer in the u.s. navy, and i'm proud to say that a lot of u.s. navy personnel stepped up to the plate right after the three mile island accident and improved safety of the nuclear system in the united states. the design of that nuclear reactor at three mile island was much better than chernobyl. >> we have 31 designed nuclear plants in the united states that are similar to the one in fukushima, causing great concern right now. do you think we have a better back up system than they do? they didn't have a good one because it was undermine by the tsunami that turned off the electricity and affected the battery back up. none of it worked. they ended up putting in sea water which is destroying their plants which is an extreme matter. how are we with battery back up. do we have these back up systems? >> we do. there are parts of the united states in california where there are two nuclear plants where concerns have been raised about seismic activity. there are a lot of faults in california. in fact three years ago in 2008 a fault was found near the diablo canyon site. the regula

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